Single Particle Studies on the Influence of the Environment on the Plasmonic Properties of Single and Assembled Gold Nanoparticles of Various Shapes

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dc.contributor.advisorLink, Stephanen_US
dc.contributor.committeeMemberKolomeisky, Anatoly B.en_US
dc.contributor.committeeMemberHafner, Jason H.en_US
dc.creatorSwanglap, Pattanawiten_US
dc.date.accessioned2013-09-16T16:51:53Zen_US
dc.date.accessioned2013-09-16T16:51:58Zen_US
dc.date.available2013-09-16T16:51:53Zen_US
dc.date.available2013-09-16T16:51:58Zen_US
dc.date.created2013-05en_US
dc.date.issued2013-09-16en_US
dc.date.submittedMay 2013en_US
dc.date.updated2013-09-16T16:51:58Zen_US
dc.description.abstractPlasmonic nanoparticles and their assembly have the potential to serve as a platform in practical applications such as photonics, sensing, and nano-medicine. To use plasmonic nanoparticles in these applications, it is important to understand their optical properties and find methods to control their optical response. Using polarization-sensitive dark-field spectroscopy to study self-assembled nanoparticle rings on substrates with different permittivities I show that the interaction between collective plasmon resonances and the substrate can control the spatial scattering image. Using liquid crystals as an active medium that can be controlled with an external electric field I show that the Fano resonance of an asymmetric plasmonic assembly can be actively controlled utilizing the polarization change of scattered light passing through the liquid crystal device. Furthermore, utilizing the strong electromagnetic field enhancement of coupled plasmonic “nanospikes” on the surface of gold nanoshells with a silica core, I show the use of single spiky nanoshells as surface-enhanced Raman spectroscopy substrates. Individual spiky nanoshells give surprisingly reproducible surface-enhanced Raman spectroscopy intensities with a low standard deviation compared to clusters of nanoparticles. In summary, the work presented here provides understanding of the plasmonic response for assembled nanoparticles on different substrates, illustrated a new method to actively control the optical response of plasmonic nanoparticles, and characterizes spiky nanoshells as surface-enhanced Raman scattering platform.en_US
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationSwanglap, Pattanawit. "Single Particle Studies on the Influence of the Environment on the Plasmonic Properties of Single and Assembled Gold Nanoparticles of Various Shapes." (2013) Diss., Rice University. <a href="https://hdl.handle.net/1911/72045">https://hdl.handle.net/1911/72045</a>.en_US
dc.identifier.slug123456789/ETD-2013-05-476en_US
dc.identifier.urihttps://hdl.handle.net/1911/72045en_US
dc.language.isoengen_US
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.subjectSurface plasmon resonanceen_US
dc.subjectSurface-enhanced Raman spectroscopyen_US
dc.subjectGold nanoparticlesen_US
dc.subjectSelf-assembled nanoparticlesen_US
dc.titleSingle Particle Studies on the Influence of the Environment on the Plasmonic Properties of Single and Assembled Gold Nanoparticles of Various Shapesen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentChemistryen_US
thesis.degree.disciplineNatural Sciencesen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelDoctoralen_US
thesis.degree.nameDoctor of Philosophyen_US
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